<!--********************************************************************
* Copyright© 2000 - 2025 SuperMap Software Co.Ltd. All rights reserved.
*********************************************************************-->
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title data-i18n="resources.title_measureArea"></title>
    <script type="text/javascript" include="bootstrap,jquery,widgets.alert" src="../js/include-web.js"></script>
    <script type="text/javascript" src="../../dist/ol/include-ol.js"></script>
</head>
<body style=" margin: 0;overflow: hidden;background: #fff;width: 100%;height:100%; position: absolute;top: 0;">
<div id="map" style="width: 100%;height:100%"></div>
<script type="text/javascript">
    var map, interaction, vectorLayer, feature,
        url = (window.isLocal ? window.server : "https://iserver.supermap.io") + "/iserver/services/map-world/rest/maps/World";
    map = new ol.Map({
        target: 'map',
        // ol v7版本用法为ol.control.defaults.defaults； v6版本以下用法为ol.control.defaults
        controls: ol.control.defaults.defaults({attributionOptions: {collapsed: false}})
            .extend([new ol.supermap.control.Logo({ link: "https://iclient.supermap.io" })]),
        view: new ol.View({
            center: [0, 0],
            zoom: 3,
            projection: 'EPSG:4326',
            multiWorld: true
        })
    });
    var layer = new ol.layer.Tile({
        source: new ol.source.TileSuperMapRest({
            url: url
        }),
        projection: 'EPSG:4326'
    });
    map.addLayer(layer);
    var source = new ol.source.Vector({wrapX: false});
    vectorLayer = new ol.layer.Vector({
        source: source
    });
    map.addLayer(vectorLayer);
    interaction = new ol.interaction.Draw({
        source: source,
        type: "Polygon",
    });
    interaction.on('drawstart', function (evt) {
        feature = evt.feature;
    });
    interaction.on('drawend', function () {
        var areaMeasureParam = new ol.supermap.MeasureParameters(feature.getGeometry());
        new ol.supermap.MeasureService(url).measureArea(areaMeasureParam).then(function (serviceResult) {
            widgets.alert.showAlert(serviceResult.result.area + resources.msg_sqm, true);
        });
    });

    map.addInteraction(interaction);

</script>
</body>
</html>